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- Centre National de la Recherche ScientifiqueFR781 papers
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5 papers · 2 filters
Symmetries and transport in site-dependently driven quantum lattices
Thomas Wulf, Christoph Petri, Benno Liebchen +1
We explore the quantum dynamics of particles in a spatiotemporally driven lattice. A powerful numerical scheme is developed, which provides us with the Floquet modes and thus enabl…
Generalised Kronig-Penney model for ultracold atomic quantum systems
A. Negretti, R. Gerritsma, Z. Idziaszek +2
We study the properties of a quantum particle interacting with a one dimensional structure of equidistant scattering centres. We derive an analytical expression for the dispersion…
Dynamics of fluctuations in a quantum system
Yi-Jen Chen, Stefan Pabst, Zheng Li +2
"\textit{The noise is the signal}"[R. Landauer, Nature \textbf{392}, 658 (1998)] emphasizes the rich information content encoded in fluctuations. This paper assesses the dynamical…
Quantum dynamics of an atomic double-well system interacting with a trapped ion
Jannis Joger, Antonio Negretti, Rene Gerritsma
We theoretically analyze the dynamics of an atomic double-well system with a single ion trapped in its center. We find that the atomic tunnelling rate between the wells depends bot…
Invariants of broken discrete symmetries
P. Kalozoumis, C. Morfonios, F. K. Diakonos +1
The parity and Bloch theorems are generalized to the case of broken global symmetry. Local inversion or translation symmetries are shown to yield invariant currents that characteri…